Yanif Ahmad   Ph.D candidate, Dept. of Computer Science, Brown University.

Projects:
Pulse - Declarative Temporal Models for Continuous-Time Data Stream Processing.

SenseWeb - A geo-based web interface for publishing and browsing live sensor data.

Borealis - Distributed Stream Processing Engine.

SAND - Scalable Adaptive Network Databases.

XPORT - eXtensible Profile-driven Overlay Routing Trees.

Publications:   [BiBTeX]

Conference:
Simultaneous Equation Systems for Query Processing on Continuous-Time Data Streams.
Y. Ahmad, O. Papaemmanouil, U. Çetintemel, J. Rogers.
Proceedings of the 24th International Conference on Data Engineering (ICDE '08).

COLR-Tree: Communication Efficient Spatio-Temporal Index for a Sensor Data Web Portal.
Y. Ahmad, S. Nath.
Proceedings of the 24th International Conference on Data Engineering (ICDE '08).
Best Research Paper award.

Extensible Optimization in Overlay Dissemination Trees.
O. Papaemmanouil, Y. Ahmad, U. Çetintemel, J. Jannotti, Y, Yildirim.
Proceedings of the 26th ACM SIGMOD Conference (SIGMOD '06).

Network Awareness in Internet Scale Stream Processing.
Y. Ahmad, U. Çetintemel, J. Jannotti, A. Zgolinski, S. Zdonik.
IEEE Bulletin of the Technical Committee on Data Engineering, March 2005, Vol 28 No. 1. (Invited paper)

The Design of the Borealis Stream Processing Engine.
D. Abadi, Y. Ahmad, M. Balazinska, U. Çetintemel, M. Cherniack, J. Hwang, W. Lindner, A. Rasin, N. Tatbul, Y. Xing, S. Zdonik.
Proceedings of the Second Biennial Conference on Innovative Database Systems (CIDR '05).

Network-Aware Query Processing for Stream-Based Applications.
Y. Ahmad, U. Çetintemel.
Proceedings of the 30th International Conference on Very Large Data Bases (VLDB '04).

A Type System for Statically Detecting Spreadsheet Errors.
Y. Ahmad, T. Antoniu, S. Goldwater, S. Krishnamurthi.
Proceedings of the 18th IEEE International Conference on Automated Software Engineering (ASE '03).

Demonstrations:
The Borealis Distributed Stream Processing Engine.
with the Borealis Team.
Proceedings of the 2nd International Conference on GeoSensor Networks (GSN '06, invited).

XPORT: Extensible Profile-driven Overlay Routing Trees.
O. Papaemmanouil, Y. Ahmad, U. Çetintemel, J.Jannotti, Y. Yildirim.
Proceedings of the 26th ACM SIGMOD Conference (SIGMOD '06).

Distributed Operation in the Borealis Stream Processing Engine.
with the Borealis Team.
Proceedings of the 25th ACM SIGMOD Conference (SIGMOD '05).
Best Demonstration award.

Workshops:
Declarative Temporal Data Models for Sensor-Driven Query Processing.
Y. Ahmad, U. Çetintemel.
Proceedings of the 4th International Workshop on Data Management in Sensor Networks (DMSN 2007).

Application-aware Overlay Networks for Data Dissemination.
O. Papaemmanouil, Y. Ahmad, U. Çetintemel, J. Jannotti.
Proceedings of the International Workshop on Semantics Enabled Networks and Services (SeNS 2006).

Locality Aware Networked Join Evaluation.
Y. Ahmad, U. Çetintemel, J. Jannotti, A. Zgolinski.
Proceedings of the First IEEE International Workshop on Networking Meets Databases (NetDB '05).

Exploiting Precision vs. Efficiency Tradeoffs in Symmetric Replication Environments (abstract).
U. Çetintemel, P.J. Keleher, Y. Ahmad.
Proceedings of the 21st ACM Symposium on Principles of Distributed Computing (PODC'02).

Articles and book chapters:
Data streams: Architectures and prototypes.
Y. Ahmad, U. Çetintemel
Encyclopedia of Database Systems.
L. Liu, M. Tamer Ozsu (editors), Springer.

Data streams: Streaming applications.
Y. Ahmad, U. Çetintemel
Encyclopedia of Database Systems.
L. Liu, M. Tamer Ozsu (editors), Springer.

Load Management and High Availability in the Borealis Distributed Stream Processing Engine.
N. Tatbul, Y. Ahmad, U. Çetintemel, J. Hwang, Y. Xing, S. Zdonik
Advances in Geosensor Networks.
S. Nittel, A. Labrinidis, A. Stefanidis (editors), LNCS, Springer-Verlag.

The Aurora and Borealis Stream Processing Engines.
with the Borealis Team.
Data Stream Management: Processing High-Speed Data Streams.
M. Garofalakis, J. Gehrke, R. Rastogi (editors), Springer-Verlag, July 2006.

Patents:
Communication Efficient Spatial Search in a Sensor Data Web Portal.
Y. Ahmad, S. Nath
US Patent Application, February 2007.